A 15-YEAR-OLD boy has been arrested on suspicion of attempted murder.

A 23-year-old man was knocked from his motorbike as it collided with a car at about 6pm on Saturday in Larkspur Drive, Eastbourne.

He was then stabbed in the back.

Later that evening a 15-year-old boy from Brighton was arrested in Polegate.

A Sussex Police spokeswoman said he had been arrested on suspicion of attempted murder, driving with no licence, driving with no insurance, failing to stop after a crash, aggravated vehicle taking and dangerous driving.”

He remains in custody.

Emergency services including police and air ambulance attended the scene of the crash and the motorcyclist was flown to hospital in Brighton.

Following the incident Detective Inspector Daniel Dugan said:”This incident may have caused another uninvolved driver to take evasive action and we would like to speak to this potential witness in particular, along with anyone else who may have seen something

“We believe this collision may have been a deliberate act, but it is an isolated incident in which we believe the people involved are known to each other.”